Stump-puller.



Patented lan. 2|, |902 M. MASHBURN. I

STUMP FULLER. l

(No Model.)

(Alplcation led Jun 5,1901.)

UNITED STATES PATENT OEEICE.

MATHEW WESLEY MASHBURN, OF VVEDOWEE, ALABAMA.

S'TUM P-PULLER.

SPECIFICATION forming part of Letters Patent No. 691,645, dated January 21, 1902.

Application iiled June 5, 1901. Serial No. 63.301. (No model.)

To all whom it may concern.-

Be it known that LMATHEW WESLEY MASH- BURN, a citizen of the United States, residing at Wedowee, in the county of Randolph and State of Alabama, have inventeda new and useful Stump-Puller, of which the following is a specication.

This invention relates to apparatus for pulling stumps and lifting and transporting other heavy bodies; and it consists in the construction, combination, and arrangement of parts, as hereinafter shown and described, and speciflcally pointed out in the claims.

In the drawings, Figure 1 is a side elevation, partially in section. Fig. 2 is a front elevation, and Fig. 3 is a plan view, of the apparatus complete. Fig. 4 is a detached perspective view of one of the removable side-brace sections. Fig. 5 is a perspective view of a section of the lower portion of the lifting-screw and the coupling mechanism,'illustrating the construction more fully.

The framework of the apparatus consists of the head timber 1, having four diverging legs 2 3 4 5, connected to its corners, as by bolts 6 and 7, and with shoe-timber S, connected to the lower ends of the legs 4 and 5, and a similar shoe-timber 9, connected to the lower ends of the legs 2 and 3, as shown. The legs 2 and 3 are connected intermediate of the shoe 9 and head 1 by a tie-bolt 10, and the legs 4 and 5 are likewise connected by a similar bolt 11. The legs 2 and 4 are also connected by tierod 12, and the legs 3 and 5 are likewise connected by tie-rod 13, as shown, these tierods being disposed above the center of the framework, so as to leave the lower part unobstructed between the corner-posts for the convenience of the operatorin attaching the chains to the couplings. Removable transverse tie-rods 14 15 are also arranged to connect the ends of the shoes 8 and 9, as shown, these tie-rods being detachable to permit the apparatus to be placed over the stump or other article to be acted on by the machine.

Inserted into the spaces between the posts 2 and 3 and the shoe 9 and tie-rod 10 is a removable diagonal cross-brace 16, and a similar diagonal cross-brace 17 is disposed in the' corresponding space between the'legs 4 and 5 and shoe 8 and rod 11, as shown in Fig. 1. These diagonal cross-braces thus serve firmly The diagonal cross-braces will preferably .be formed with shoulders 18, adapted to engage the tie-rods 10 and 11, so that the tierods will serve as stops to limit the inward movement of the braces, and thus support y them` in position between the posts.

19 represents the lifting-screw, which is of the usual construction and will be provided with a transverse pin 20 through its lower end and will pass upward through the head 1, as shown. Upon the head 1 is a transverse block 21', with a central portion cut away, so that its ends project downwardbelow the sides of the head 1, as shown at 22 in Fig. 2, to insure support against lateral strains. lThe block 21 and head l are each provided with registering central apertures 21a 21b for the reception of the screw 19, and the block immediately around this aperture 21a is concaved. Upon the block 21 is supported a v plate 22, having its lower surface convex and its upper surface concaved to correspond to the concave in the block 21, as shown in Fig. 1, to afford a bearing for the nut 24 of the screw19, the lower surface of the nut being convex to fit the concave side of. the plate 23, as shown in Fig. 1.

Olamped upon the sides of the nut 24 by bolts 25 are two blocks 26 27, the blocks having recessesin their adjacent sides to embrace the nut 24 and the screw 19 and also having recesses in their ends to provide for the pivotal engagement of sweeps '28 29, by which the screw may be actuatedby revolving the nut and the binding-plates by power applie to the ends of the sweeps. x

The apertures 21L 2lb-through the head 1 and the block 21 for the screw 19 are considerably larger than the screw, so that the latter will be free to swing by its lower end in all directions without danger of cramping, this free lateral movement being provided for by the coacting vcorresponding concave and convex surfaces of the block 21 and nut 24, as will be readily understood.

Surrounding the lower end of the screw 19 IOO ably oblong or elliptical ring '30, and linked into this ring at its longer ends are hooks 231 32, and surrounding the screw 19 above the ring 30 and resting upon the upper ends of the shanks of the hooks 31 is another ring 33, the duplicate of the ring 30, and supporting-hooks 34 35, which are substantially duplicates of the hooks 31 and 32. Thus` the four hooks will be supported by the two rings and the two rings supported by the one transverse pin 20. The hooks and rings beingsubstantially duplicates, there will be no danger of getting them mixed or displaced when being placed in position.

In operating the device the usual chains are placed about the stump or stone or other heavy article to be lifted and the tie-rods 14 or 15 and the diagonal cross-braces 1G and 17 removed and the machine drawn over the stump or other article to be lifted. The removal of the side braces 15 and 17 and the rods 14 and 15 leaves the screw and its coupling means and the chains about the stump or other article to be lifted free of access, except for the four corner-posts 2, 3, 4, and so that the coupling may be readily and quickly made between the chains encircling the stump or other article to be lifted and the hooks 31 and 32 and 3i and 35. The operator is therefore not hampered or hindered in his work by the presence of obstructions. After the coupling is completed the rods 1l and 15 are connected to the ends of the shoes and the diagonal cross-braces are replaced in position, so that when the power is applied i the framework will be effectually braced, so

that it will be able to resist the severe strains to which it will be subjected. This makes a veryconvenient and compact apparatus that will eii'eetually perform the work required of it and at the same time be applicable for use in locations in which many machines of this class are inoperative.

The construction of the coupling-hooks is an important feature of my invention, as it dispenses with many extra parts and greatly facilitates the operations byits simplicity and efficiency.

lWhat I claim as new is i. ln a device of the class described, a supporting-framework havinga central aperture in its upper par-t and concaved around said aperture, ascrew projecting through said aperture, a nut engaging said screw and with a i convex surface engaging said concave surface in said framework, two blocks having recesses embracing said nut, and means for clamping said blocks upon said nut, and power-sweeps pivotally connected with said i blocks, substantially as shown and described.

2. In a device of the class described, a supporting-framework having a head timber, a transverse block embracing said head and with a central enlarged aperture and having a concaved upper surface around said aperture, a screw projecting through said aperture, a nut engaging said screw and with a convex surface engaging said concave surface, a socketed head-block clamped upon the nut, and sweeps pivotally connected with the block, substantially as shown and described.

In testimony that I claim the foregoing as my own I have hereto affixed my signature in the presence of two witnesses.

lll A'llIEW WESLEY Dl ASH BURN.

Witnesses:

l. B, BRIDGES, Witt. 1I. BRIDGEs. 

